Improved method of uniting rubber  rolls to shafts



No. 46,464. PATENTED FEB. 21, 1865.

' W. H. GRANT.-

METHOD OF UNITING RUBBER ROLLS T0 SYHAFTS.

- UNITED STATES PATENT OFFICE;

WILLlA-M H. GRANT. OF wmoHEnno-N, MASSACHUSETTS.

IMPROVED METHOD OF'UNITING RUBBER ROLLS T0 SH AFTS.

Specification forming part of Letters Patent No. 46,464, dated February 21, 186.").

To all to whom it may concern Bevit known that I, WILLIAM H. GRANT, of

.Winchendon, in the county of Worcester and State 'of lll assachusetts, have invented a new and Improved Method of Uniting Rubber .Rolls to Shafts; and I hereby declare that the following is a full andexact description thereof, reference being had to. the accompanying drawings, making part of this specification,'in which- Figure 1 is a view of the tool which .I employ in laying the roll upon its shaft. Fig.2 is a longitudinal section showing the position of the roll just before the tool is withdrawn.

- Fig 3 is a longitudinal section through the shaft and roll alter they are united. together.

In the ordinary-processof connecting rubber rolls with metallic shafts it'has been customary toheat the shafts s'nflicientl y to slightly melt the rubber in the. interior of the roll to cause it to adhere tothe shaft when drawn upon -it.' After heating, each shaft was re-' moved to a vise, where it was securely held while the roll-was being-laid on. .This

method was slow andlaborious, and wringen rolls' so laid on were liable after a little use to turn on theirshafts during the operation of wringing clothes. I 4

Theobjectof myinventionistoovercomethe above-mentioned difliculties; and it consists inmelting the rubber in the interior of the roll by drawing it over a heated instrumentwhich surrounds-that portion of the shaft 'on' which the roll is to be laid, which instrument,

5 on being withdrawn, leaves the roll in the required position, the shaft beingina cool state when the roll is laigl upon it.

To enable others skilled in the art-to un-- derstand and use my invention, Iwill proceedtodescribe the manner 'in which I have carried itout.

In' the said drawings, A is, a metal shaft having a portion of its length turned down, as seenat a. The portion hof this shaft is of the length of the-rubber roll B,'to beplaced thereon.

0 is a hollow Inetal tube, which is tapered 4 somewhat conically rrom c to d to allow of the 'roll B being drawn over it.

. The operation of unitin g the roll to the shaft willenow be described. f A v The end 0 of the cool shaft isfirst secured firmly in a vise','the inclination of the shaft being aboutforty-flve degrees with the bench,

and the tube 0, having been'heated sufficiently to melt the rubber, is seized at d by a pair-of tongs and placed over that portion of the shaft on which the roll is to be laid, the lower end of the tube Q extending up to the shoulder f of the shaft, as seen in Fig. 2.- The I hollow rubber'roll is now drawn over the tapering end ad of the tube 0 and down upon the 1 shaft A until itsend 'g-is even withthe shouldcrf of the shaft, when the roll being held in place, the tube 0 is easily withdrawn from under the roll, which-leaves the latter in its proper place upon the shaft A, which isnow removed from the vise, and another shaft secured as'beforc; ready for the same operation to be repeated, the tube 0 being employed to lay on a number of rolls 'beforeits temperature is reduced. so much as to be unable to meltthe rubber as required 7 By my improved process of laying on the rolls I needonly employ two tubes or instruments similar to ,0, one of which is'being heated while'the other is in use, and consequently'I require amiich smaller furnace than is necessary where each shaft is to be heated. By thus meltingthe interior surface of the roll and'la'ying it upon a cool shaft instead of on a heated shaft, as heretofore, the roll is -,caused to adhere more firmly to its shaft, and

the liability of the .roll becoming loose and turning upon it is thereby avoided. I What I claim as my invention, and desire to secure by Letters Patent, is-

The method of uniting rubber rolls to shafts,

substantially as set forth.

WILLIAM H. GRANT.

Witnesses:

IRVING E. WEs'roN, Ll. M. WEsToN. 

